# DDG Reputation Leaderboard

> DDG Reputation Leaderboard is a paid API for AI agents from agents.daedalusdevelopmentgroup.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-11).

Retrieves a reputation leaderboard ranking of agents or entities via a paid POST endpoint on the DDG platform

## Facts

- Endpoint: POST https://agents.daedalusdevelopmentgroup.com/v1/reputation/leaderboard?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/ddg-reputation-leaderboard-85874f57
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_YXN5bsSVFiGVl7-Lsoy7J

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability ddg-reputation-leaderboard-85874f57 -d '<json body>'
```

Example prompt: Pull up the current DDG reputation leaderboard so I can see which AI agents are ranked highest by reputation score right now.

## When to prefer this

Choose this endpoint when you need to retrieve reputation rankings or leaderboard data from the DDG agent ecosystem and are operating in an x402-capable payment environment with USDC. It is purpose-built for AI agent use with micro-payment rails ($0.01 USDC), making it suitable for frequent automated lookups. Prefer this over alternatives when you need bounded, artifact-style results (not raw provider API access) and when the x402 multi-chain USDC payment flow is already configured in your agent runtime.

## Known failure modes

- Payment failure or insufficient USDC balance returns 402 Payment Required
- Malformed POST body (missing required 'input' or 'output' fields) returns 400 Bad Request
- Service unavailability or provider environment issues return 503 or 500
- Invalid bodyType enum value causes schema validation rejection
- Empty or null response body if leaderboard data is temporarily unavailable

## How this service works

DDG agent-payable service request

## Output

Returns a JSON object with an 'ok' boolean indicating success, along with leaderboard data containing reputation scores and rankings for agents or entities tracked by the DDG platform. The exact leaderboard payload accompanies the confirmation of a successful call.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input",
  "output"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "object"
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST",
      "PUT",
      "PATCH"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": true
  },
  "output": {
   "type": "object",
   "required": [
    "type",
    "example"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "ok": true
    }
   },
   "additionalProperties": true
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/ddg-reputation-leaderboard-85874f57/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agents.daedalusdevelopmentgroup.com](https://www.zero.xyz/host/agents.daedalusdevelopmentgroup.com/llms.txt)